#143A7D#143A7D

#143A7D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.4% C 0.122 H 260.8°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#143A7D
RGB	rgb(20, 58, 125)
HSL	hsl(218, 72%, 28%)
HSV	hsv(218, 84%, 49%)
CMYK	cmyk(84%, 53.6%, 0%, 51%)
CIE-LAB	lab(25.73, 13.56, -41.76)
CIE-LCH	lch(25.73, 43.90, 287.99°)
OKLab	oklab(36.43% -0.0194 -0.1203)
OKLCH	oklch(36.43% 0.122 260.8)
XYZ	xyz(5.5019, 4.6548, 20.0066)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#143A7D #7D5714

analogous

#146E7D #143A7D #22147D

triadic

#143A7D #7D143A #3A7D14

tetradic

#143A7D #7D146E #7D5714 #147D22

square

#143A7D #7D146E #7D5714 #147D22

split-complementary

#143A7D #7D2214 #6E7D14

monochromatic

#040C1A #0C2248 #143A7D #1C52B2 #2E6DDE

Accessibility & contrast

On white

10.87

#143A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#143A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #143A7D

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##143A7D	#FFFFFF	#000000	##FFFFFF
##143A7D	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C427F

Deuteranopia (green-blind)

#00387C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #143a7d;
/* rgb */ color: rgb(20, 58, 125);
/* oklch */ color: oklch(36.4% 0.122 260.8);

Tailwind

colors: {
  custom: {
    50: '#656fa3',
    500: '#143a7d',
    950: '#000000',
  },
}

SCSS

$custom: #143a7d;
$custom-light: #656fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#143a7d",
  "rgb": {
    "r": 20,
    "g": 58,
    "b": 125
  },
  "hsl": {
    "h": 218.286,
    "s": 72.414,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36425,
    "c": 0.12188,
    "h": 260.8
  },
  "luminance": 0.04656
}

Semantic roles & 50–950 ramp

primary

#143A7D

secondary

#B2873A

accent

#AD39EF

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #143A7D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →